dkontney
Member
Hello,
We have several groups of items that the only difference is the length of the item, so when a B or O message is generated I need a way for the planners to be able to substitute a longer size for the shorter item that the message was generated for rather than placing a new order. I do not want to update the work order parts list or BOMs.
I tried using a seperate forecast type to record the additional demand on the longer size as a positive forecast and then use a negative forecast for the shorter item in an attempt to create additional supply. MRP completely ignored the negative forecast. I could not find any processing options on R3482 / R3483 to allow negative values in the Forecast / MPS row or to be taken into account when determining planned orders.
We are a make to order manufacturing plant using planning BOMs to generate future component demand along with seperate forecasts for items sold as product support or service parts. The parts I'm working with have a 3 month lead-time, with our typical lead-time to our customers of 2-3 weeks.
Actual substitution / decision is made during manufacturing and not upfront during work order release. They keep using the shorter piece until it is used up, then switch to using the next larger size. We have no way to predict upfront which order will use larger size.
I'm looking for a way / process for the planners to identify this substitution for MRP / Ordering purposes only. Method would need to survive future MRP runs. Wanted to use forecasting method detailed above because we use weekly forecast buckets which would force planner to review their substituion on a weekly basis as the forecast would drop out as time passed. Any suggestions would be greatly appreciated.
Running R3483 on E1 9.0.
Thanks,
Dave
We have several groups of items that the only difference is the length of the item, so when a B or O message is generated I need a way for the planners to be able to substitute a longer size for the shorter item that the message was generated for rather than placing a new order. I do not want to update the work order parts list or BOMs.
I tried using a seperate forecast type to record the additional demand on the longer size as a positive forecast and then use a negative forecast for the shorter item in an attempt to create additional supply. MRP completely ignored the negative forecast. I could not find any processing options on R3482 / R3483 to allow negative values in the Forecast / MPS row or to be taken into account when determining planned orders.
We are a make to order manufacturing plant using planning BOMs to generate future component demand along with seperate forecasts for items sold as product support or service parts. The parts I'm working with have a 3 month lead-time, with our typical lead-time to our customers of 2-3 weeks.
Actual substitution / decision is made during manufacturing and not upfront during work order release. They keep using the shorter piece until it is used up, then switch to using the next larger size. We have no way to predict upfront which order will use larger size.
I'm looking for a way / process for the planners to identify this substitution for MRP / Ordering purposes only. Method would need to survive future MRP runs. Wanted to use forecasting method detailed above because we use weekly forecast buckets which would force planner to review their substituion on a weekly basis as the forecast would drop out as time passed. Any suggestions would be greatly appreciated.
Running R3483 on E1 9.0.
Thanks,
Dave